Blending system

ABSTRACT

A blending system is shown and described herein. A blending system may include a base including a motor and a first shell that encases the motor. The blending system may also include a container that is removably coupled to the blender base. The blending system may also have a second shell selectively attached to the first shell. The blending system may also have a wall positioned within the base to direct airflow from the fan along a volute-shaped path.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.14/214,063, filed Mar. 14, 2014, which is a continuation-in-part of U.S.patent application Ser. No. 14/195,159, filed Mar. 3, 2014, which claimsthe benefit of U.S. Provisional Patent Application Ser. No. 61/771,367,filed Mar. 1, 2013, and entitled “Blender System,” and U.S. ProvisionalPatent Application Ser. No. 61/789,455, filed Mar. 15, 2013, andentitled “Quad Seal for a Blender,” all of which are incorporated hereinby reference.

TECHNICAL FIELD

The present teachings relate to a blending system, and moreparticularly, to a high performance, small format blending system.

BACKGROUND

Blending systems are often used to blend and process foodstuffs. Inrecent years, personal blending systems have been developed withblending containers that are designed to serve a dual purpose andfunction as both a blending container and a drinking vessel. Typically,the container may include the foods for blending and then will connectat its top with a blade assembly. Once connected, the user may invertthe container/blade assembly so that the container/blade assemblyengages with the personal blending system base. Once blending iscompleted, the user may remove the container/blade assembly from thebase, invert it again, and remove the blade assembly from the cup. Theuser can then directly drink from that container, or insert a top on thecontainer for later use.

The personal blending system may have an interface between the containerand the blade assembly, such as an o-ring. This interface may generallyprevent liquid from leaking out of the container when attached to theblade assembly. That o-ring may typically include a solid round orsquare cross-sectional shape. This shape may generally create anair-tight seal between the two structures.

However, those conventional personal blending systems have relativelysmall motors and thus, do not observe the potential pressure build-up inthe container as would a blender with a high performance motor, such asa 2 HP motor. As a result, the use of a conventional sealing system witha high performance blender can create a large and unsafe pressurecondition within the container.

SUMMARY

A blending system is shown and described herein. A blending system mayinclude a base having a motor and a first shell that encases the motor.The blending system may also include a container that is removablycoupled to the blender base. The blending system may also have a secondshell selectively attached to the first shell.

A blending system may include a base having a motor, an inner shellencasing the motor, and a top shell attached to the inner shell. Theblending system may also have a blade base assembly removably attachedto the base. The blade base may have a blade positioned in proximity toan interior surface and operatively coupled with the motor. The blendingsystem may also have a container including an inner and outer layer. Thecontainer may selectively attach to the blade base.

A blending system may include a base encasing a motor and a fan. Theblending system may also have a container configured to accept and holdmaterial. The blending system may also have a wall positioned within thebase to direct airflow from the fan along a volute-shaped path.

DESCRIPTION OF THE DRAWINGS

The present teachings may be better understood by reference to thefollowing detailed description taken in connection with the followingillustrations, wherein:

FIG. 1 is a perspective view of a blender system with a blendingcontainer;

FIG. 2 is a back view of a blender system with a blending container;

FIG. 3 is a side view of a blender system with a blending container;

FIG. 4 is a perspective view of a blender base;

FIG. 5 is an exploded view of a blender base;

FIG. 6 is an exploded view of a blender base and a corresponding topshell;

FIG. 7 is a cross-sectional view of the blender base and top shell ofthe line 7-7 in FIG. 4;

FIG. 8 is a cross-sectional view of the blender base and top shell ofthe line 8-8 in FIG. 4;

FIG. 9 is a perspective view of an embodiment of a blending container;

FIG. 10 is a perspective view of a blender system with anotherembodiment of a blending container;

FIG. 11 is a perspective view of a blending container;

FIG. 12A is a first cross-sectional view of a blending cup;

FIG. 12B is a second cross-sectional view of the blending cup;

FIG. 13 is a plan view of a blending cup;

FIG. 14 is an bottom view of a blending cup;

FIG. 15 is a perspective view of an embodiment of a blade assembly;

FIG. 16 is a plan view of a blade assembly;

FIG. 17 is a perspective view of a lid;

FIG. 18 is a plan view of a blender base;

FIG. 19 is a plan view of another embodiment of a blender base;

FIG. 20 is a cross-sectional view of a gasket of a blender system;

FIG. 21 is a cross-sectional view of a gasket of a blender system; and

FIG. 22 is a cross-sectional view of a gasket on a blending system.

DETAILED DESCRIPTION

Reference will now be made in detail to exemplary embodiments of thepresent teachings, examples of which are illustrated in the accompanyingdrawings. It is to be understood that other embodiments may be utilizedand structural and functional changes may be made without departing fromthe respective scope of the present teachings. Moreover, features of thevarious embodiments may be combined or altered without departing fromthe scope of the present teachings. As such, the following descriptionis presented by way of illustration only and should not limit in any waythe various alternatives and modifications that may be made to theillustrated embodiments and still be within the spirit and scope of thepresent teachings.

A blending system 20 of the present teachings is shown in FIGS. 1-3. Theblending system 20 may include a blender base 24, a blade base 28, andat least one blending container 32 of appropriate configurations. Theblade base 28 may be selectively and operatively coupled with theblender base 24 and the blending container 32 as described in moredetail below. The blending system 20 may include an interlock feature 34that may generally prevent operation of the blending system when and ifthe blending container and blender base 24 become disengaged asdescribed in more detail below. The blending system 20 may have asmaller configuration than traditional blending systems. The blendingsystem 20 may have a smaller footprint and smaller profile thantraditional blending systems. The blending system 20 may be considered apersonal or individual blending system. However, it should be understoodthat the present teachings are not limited to personal blending system.The present teachings may apply to any appropriate blending system.

As shown in FIG. 4, the blender base 24 may be any appropriate size andconfiguration. The blender base 24 may be of a configuration to houseand generally protect the operative components of the blending system20. The blender base 24 may be unibody. Alternatively, as shown in FIG.5, the base 24 may be formed of multiple pieces including a main body 25which encases several components, including a motor housing 27, as wellas a high performance motor, sound damping components, and fan (all notshown). A foot member 29 may be operatively attached to an underside ofthe body 25 of the blender base 24 to protect the components of theblending system 20. The foot member 29 may be selectively attached tothe body 25 by any appropriate fastening means 31, including, withoutlimitation, a snap-fit, a threaded engagement, or any other appropriatemeans. The blender base 24 may also include a front member 33operatively attached by fastening means 31 to a front of the body 25 ofthe blender base 24 to protect the components of the blending system 20.These operative components may be of any appropriate configuration—thepresent teachings are not limited to any specific configuration. Theblender base 24 may include a volute system to direct airflow within theblender base 24. The volute system can be a curved pathway provided onan interior portion of the foot member 29. The pathway can be a wallformed materially integrally with the foot member 29 that is operable todirect airflow in a predetermined manner. Accordingly, the wall providesa curved pathway for the air to travel through the blending system 20during operation thereof. By directing airflow in this manner, thevolute system may boost efficiency of the blending system 20 by between20% to 30% of prior art systems.

The blender base 24 may include vents 36 of any appropriateconfiguration. The vents 36 may facilitate exhaustion of warm airgenerated within the blender base 24 during operation of the blendingsystem 20. A fan (not shown), such as a radial fan, may be locatedwithin the blender base 24 and used to direct ambient cool air into theblender base 24 to provide cooling air to the motor. The motor mayoperate the blade base 28 to perform the appropriate blending requiredof the blending system 20.

The motor (not shown) may be in operative communication with a powercord 44 configured to operatively communicate with a power supply sourceto provide the appropriate power to operate the blending system 20. Apower cord (not shown) may be of any appropriate configuration—thepresent teachings are not limited to the configurations shown anddescribed herein.

As shown in FIGS. 5-8, the blender base 24 may include a top shell 56and an inner shell 57. The inner shell 57 provides an enclosed housingfor the blender base 24. Accordingly, the inner shell 57 can beconfigured to generally encase the motor and other electrical componentsof the blender base 24. The top shell 56 and inner shell 57 may beformed of any appropriate material, including, but not limited to,polymeric materials such as elastomers or rubbers or more specificallythermoplastic or thermoset elastomers, rubber-based materials, and otherpolymers and co-polymers.

The top shell 56 may be provided in a variety of customizable colors,designs, or textures. The top shell 56 may be of any configuration. Thetop shell 56 may provide a customizable aesthetic finish to the blendingsystem 20. An air gap 59 may be provided between the top shell 56 andthe inner shell 57 to reduce vibration that may occur during operationof the blending system 20. This noise insulation may generally reducethe noise of operation of the blending system 20. The top shell 56 maybe attached to the inner shell 57 by a fastener 60 of any appropriatetype and configuration. By way of a non-limiting example, the fastener60 may be a threaded fastener that is selectively attachable to theblender base 24 and top shell 56 selectively securing them together. Theinner shell 57 may also be independently attached to the blender base 24as shown in FIG. 6. It is to be appreciated that the top shell 56 may beattached with the inner shell 57 in any appropriate manner, such as by asnap-fit connection 61 as shown.

The top shell 56 does not constitute any portion of the electricaland/or safety enclosure of the blending system 20. Rather, the innershell 57 sufficiently provides an electrical and safety enclosure thatis capable of being approved by a product safety agency, such as UL(Underwriters Laboratories). As a result, the blending system 20 can beshipped internationally and stored at distribution centers without thetop shell 56 in place. When orders come in to the distribution centerfor a particular colored top shell, the distributor can then attach theappropriate top shell 56 to the inner shell 57 of the blending system 20without requiring any additional product testing or agency approvals.Thus, the top shell 56 can be a purely ornamental component of theblending system 20.

As shown in FIG. 1, the blender base 24 may include a control panel 53positioned on the front of the blender base 24. The control panel 53 maybe of any appropriate configuration and may be utilized to set theoperative condition of the blending system 20 by the user. By way of anon-limiting example, the control panel 53 may include at least one knob72 to selectively adjust settings of the blending system 20, including,without limitation setting rotational speed of the blade base 28 duringoperation of the blending system 20. The knob 72 can also be used toreset the system, turn the system on/off, select preprogrammedfunctions, and/or select a pulse function. It will be appreciated thatthe control panel 53 may further include alternative or additional inputdevices, such as buttons and switches, and other feedback and readoutdevices, such as an LCD or LED display.

In those embodiments involving the knob 72, the top shell 56 may includea generally cylindrical wall (not shown) projecting from a face 68 ofthe top shell 56 and into an interior portion of the knob 72. The wallmay be configured to generally prevent ingress of dirt and debris intothe base 24. Further, the wall may generally prevent side loads on theknob 72, especially during operation thereof. The wall can be generallycylindrical or of any other suitable shape. The blender base 24 mayinclude a pedestal 76 at a top portion of the blender base 24. Thepedestal 76 may be of any appropriate shape and size and can bematerially integral with the blender base 24. By way of a non-limitingexample, the pedestal 76 may be sized and shaped to cooperate with theblade base 28 as described in more detail below. The pedestal 76 may beof a shape such that an interior of the pedestal 76 corresponds with theexternal shape of the blade base 28. In the present example, theinterior shape of the pedestal 76 and the external shape of the bladebase 28 are generally circular. The pedestal 76 may be formed bycorresponding portions of both the top shell 56 and inner shell 57.Further, a pedestal portion 73 of the top shell 56 may generallycircumscribe at least a portion of the pedestal portion 71 of the innershell 57 with a lip 216. The pedestal portion 73 of the top shell 56 mayprovide an aesthetically pleasing finish to the pedestal 76.

The blending system 20 may include a blending container 32 that may beof any appropriate configuration shape and size. The blending container32 may have a generally pitcher-like configuration including a handle 45located on an opposite side of the container 32 from a spout 47 toassist in directed pouring, as shown in FIG. 6.

In addition or in the alternative, as shown in FIGS. 10 and 11, theblending system 20 may include container 132 to act as a single servecontainer, i.e., it is a smaller size than a standard blendingcontainer. The container 132 may also be of a configuration to act as adrinking vessel. The containers 32, 132 may be a variety of sizes,including, but not limited to, a 20 oz., 24 oz., or a 32 oz. size.

As shown in FIGS. 12A and 12B, the blending container 132 may be adouble-walled container having an inner layer 84 and an outer layer 88spaced from the inner layer 84. A space 92 may be formed between theinner and outer layers 84, 88. The space 92 may provide an insulativefeature to the blending container 132, i.e., it may help the contentsthereof remain cool or warm, as applicable. Further, the blendingcontainer 132 may include elongated ribs 96 projecting from an interiorside 100 of the inner layer 84 into a blending are of the blendingcontainer 132. The ribs 96 may comprise one or more protrusionsgenerally spanning a length of the blending container 132. In thepresent example, there are two ribs 96 spaced at opposing sides of theblending container 132. The ribs 96 may be configured to aid inagitating the contents of the blending container 132 during blending.

As shown in FIGS. 13 and 14, the blending container 132 also includes aplurality of fins 97 positioned between an outer wall 103 of the innerlayer 84 and an inner wall 105 of the outer layer 88. One or more fins97 may project outwardly from the outer wall of the inner layer 84 oralternatively or additionally, one or more fins 97 can project inwardlyfrom the inner wall of the outer layer 88. The fins 97 facilitatealignment and support of the inner layer 84 within the outer layer 88.

The blending container 32 may include an open end 113 through whichmaterial may be inserted in advance of blending or may exit afterblending. The open end 113 may be of any appropriate configuration andsize. The open end 113 may be of a configuration to permit a user todrink directly therefrom. This may result in the blending container 32being capable of utilization as a drinking vessel. The blendingcontainer 32 may include an engaging portion 114 configured tooperatively and selectively engage with the blade base 28. The engagingportion 114 may be of any appropriate configuration and type, including,without limitation being a threaded portion, a bayonet engaging member,or the like. Regardless of the configuration of the engaging portion114, when secured to an outside portion 112 of the blade base 28,additional blending space is created between an interior portion of theblade base 28 and the open end 113 of the blending container 32, as willbe described in greater detail herein.

FIGS. 15 and 16 illustrate two different embodiments of the blade base28. Each embodiment of the blade base 28 may be sized and shaped tooperatively fit within an opening 116 in the pedestal 76 in anyappropriate manner. The blade base 28 may include a housing 120 having afirst side and a second side. A blade 124 is positioned within the firstside of the housing 120. The housing 120 may be of any appropriateconfiguration. As shown in FIG. 13, the housing 120 may include arectangular inner wall 128 wherein the corners are used for agitatingthe contents of the attached blending container 32, as will be describedherein. Alternatively, as shown in FIG. 12, the housing 120 may includea generally circular inner wall 128 with one or more projections usedfor agitation. The blade 124 may be connected to the housing 120 in anyappropriate manner. The blade 124 may be of any appropriateconfiguration, type and size. The present teachings are not limited tothe configuration shown and described. By way of a non-limiting example,the blade 124 can be of a conventional blender blade configuration and,as such, includes a plurality of radially extending blades 136 that arecarried by, and positioned above a bottom surface of the blender base 28by a vertically oriented blade shaft. The blade shaft extends downwardlythrough a hub to the second side of the blender base 28. A spline (notshown) is secured to the end of the blade shaft on the second side ofthe blender base 28. The spline of the blade shaft engages with asplined coupler positioned within the pedestal, the splined couplerbeing connected to a motor shaft. Accordingly, when the blade base 28 ispositioned within the pedestal 76, rotation of the motor shaft caused byactuation of the motor is thereby transferred to the blades, which arerotatably positioned within the blade base.

As mentioned above, the blade base 28 may include features to agitatethe flow of material with the blending container 32. For example, theblade base 28 may break up flow of material within the blendingcontainer 32 during operation of the blending system 20. In theembodiment shown in FIG. 16, the blade base 28 may include a protrusion148 on the inner wall 128 of the housing 120. The protrusion 148 may beof any appropriate shape and size. By way of a non-limiting example, theprotrusion 148 may be a protrusion 148 extending from the inner wall128. The protrusion 148 may be any appropriate shape, such as generallyrounded. The protrusion 148 may be monolithically formed with the innerwall 128 or may be attached through a subsequent operation. Theprotrusion 148 may be approximately ½ inch in diameter. The protrusion148 may extend from a length of the blade base 28 from the bottom wall133 to an open top end 152. It will be appreciated that the blade base28 may include more than one protrusion 148. The blade base 28 may alsoinclude an agitator 164 positioned on the bottom wall 133. The agitator164 may be of any appropriate configuration and is not limited to thatshown and described. Further, any appropriate number of agitators 164may be utilized, e.g., one, two, three, etc. In some embodiments, theblade base 28 may not include an agitator 164. The agitator 164 mayinclude a ramped surface formed in the bottom wall 133. The rampedsurface may be of any appropriate configuration, including, withoutlimitation being a helical ramp formed with the bottom wall 133. Theagitator 164 may be monolithically formed with the bottom wall 133 ormay be attached through a subsequent operation. The agitator 164 mayform a ledge 168 in the bottom wall 133, which may be utilized todisrupt the flow pattern of the material during use of the blendingsystem 20. The blade base 28 may include one or more agitator 164; thepresent teachings are not limited to that shown. Further, the bottomwall 133 may not include an agitator 164.

In addition or alternatively, as shown in FIG. 15, the inner wall 128 ofthe blade base 28 may be of a shape to agitate the flow of materialwithin the blending container 32 during operation thereof. In theseembodiments, the base 133 may have a generally rectangular shape such asa generally square shape

The engagement between the blade base 28 and the blending container 32is such that corners 160 of the square-shaped inner wall 128 align withthe ribs 96 formed within the inner wall of the container 32. Thealignment of the corners 160 and the ribs 96 increases the agitation ofthe material in the container during the blending operation, therebyimproving the blend quality and enhancing the blender performance. Oncealigned, the user can also visually confirm that the blade base 28 isoperatively secured with the blending container 32.

The blade base 28 may include an engaging portion 172 configured tooperatively and selectively secure with the engaging portion 114 of theblending container 32. The engaging portion 172 may be of anyappropriate configuration. By way of a non-limiting example, theengaging portion 172 may be a threaded portion 172 configured to matewith the threaded portion 114 of the container portion 32. In theseembodiments, the threaded portion 114 of the container portion 32 may begenerally circular and the threaded portion 172 of the blade base 28 maycorrespondingly circular in shape. As described above, the blendingcontainer 32 may be configured as a drinking vessel. In theseembodiments, the blending container 32 is able to easily convert from ablending container to a drinking vessel. For example, in addition to theopen end 113 noted above, the blending container 32 may include a closedend 176 generally opposite the open end 113. When the blending container32 is operatively secured to the blade base 28, the housing 120 of theblade base 28 is configured such that the housing 120 may createadditional blending space for the material to be blended. As an example,the location of the blade 124 within the housing 120 may be generallycup-shaped, which may provide this additional blending space. Whenremoved from the blade base 28, the blending container 32 may functionas a drinking vessel. In some embodiments, the blending container 32 mayinclude a lid assembly 180 that is selectively engageable with the openend 113 of the blending container 32. As shown in FIG. 17, the lidassembly 180 may be of any appropriate configuration. For example, thelid assembly 180 may include a base member 184 that may be selectivelyengageable with the open end 113 in any appropriate manner, including,without limitation via a snap-fit, a threaded engagement, or anyappropriate means. The lid assembly 180 may further include a cap 188that may be selectively positionable relative the base member 184. Thecap 188 may be positionable to and from open and closed positions. Inthe open position, the cap 188 may allow contents within the blendingcontainer 32 to be expelled therefrom. In the closed position, the cap188 may generally prevent contents of the blending container 32 to beexpelled. Further, in the closed position, the cap 188 may be engagedwith the base member 184 to create a generally liquid tight seal suchthat regardless of the position of the blending container 32 thecontents within the blending container will not be expelled therefrom.In this closed position, the blending container 32 may be utilizedduring travel or otherwise in storage of the contents therein.

As described above, the blending container 32 and blade base 28 mayinclude the interlock feature 34. The interlock feature 34 may be of anyappropriate configuration to generally prevent access to the blade 124when it is spinning. As shown in FIG. 11, for example, the blendingcontainer 32 may include a first tab 192 extending therefrom. As shownin FIGS. 12A and 12B, the first tab 192 may include a magnet 196embedded therein. The at least one magnet 196 may be secured with theblending container 32 in any appropriate manner. By way of anon-limiting example, the magnet 196 may be welded into a pocket 200formed in the blending container 32 between the inner layer 84 and theouter layer 88. In a further non-limiting example, the magnet 196 may beadhered, such as through use of an adhesive, between the inner layer 84and the outer layer 88 of the blending container 32.

Further, as shown, the blending container 32 may include a second tab204 extending therefrom. The second tab 204 may be of a similarconfiguration as the first tab 192, but may be of a different size.Further, the second tab 204 may be offset from the first tab 192 alongthe circumference of the blending container 32 at an angle that is not180 degrees. In other words, the first tab 192 and the second tab 204are not aligned with one another, as described in more detail below. Thesecond tab 204 may include a second magnet 208 embedded therein. Thesecond magnet 208 may be welded into a second pocket 212 formed in theblending container 32 between the inner layer 84 and the outer layer 88.In a further non-limiting example, the second magnet 208 may be adhered,such as through use of an adhesive, between the inner layer 84 and theouter layer 88 of the blending container 32. While the first tab 192with the magnet 196 and the second tab 204 with the second magnet 208are shown and described, any number of tabs and magnets may be usedwithout departing from the present teachings. Further still, the numberof tabs and magnets utilized are not limited to that shown. Anyappropriate number of tabs and magnets may be utilized, e.g., two,three, four, etc.

In these embodiments, the first magnet 196 and second magnet 208 may bepositioned in the tabs 192 and 204, respectively. Once inserted therein,the inner and outer layers 84, 88 may be sonic welded together. Oncesonic welded, the magnets 196 and 208 are melted into the tabs 192 and204 capturing the magnets 196 and 208 between the inner and outer layers84, 88.

As shown in FIGS. 4, 18, and 19, the blender base 24 may includes thelip 216 in the opening 116 in the pedestal 76; the lip 216 may generallyencompass a majority portion or all of the opening 116. The lip 216 mayinclude first and second recessed portions 220, 224. The first andsecond recessed portions 220, 224 may be configured such that the tab192 and second tab 204 are selectively and operatively engageable withsuch first and second recessed portions 220, 224. The first recessedportion 220 may be shaped and sized such that only the first tab 192 maybe capable of operatively engaging it. Similarly, the second recessedportion 224 may be shaped and sized such that only the second tab 204 isoperatively engageable therewith. This configuration may help align theblending container 32 and blade base 28 with the blender base 24. Asnoted above regarding the relative positions of the tab 192 and secondtab 204, the first and second recessed portions 220, 224 may be offsetfrom one another such that they are not aligned at 180 degrees withrespect to one another.

Further each of the first and second recessed portions 220, 224 mayinclude a sensor, such as a reed switch (not shown) in its proximity.The reed switch may be utilized to indicate when both of the tab 192 andsecond tab 204 are operatively positioned within the first and secondrecesses 220, 224. Contacts of the reed switch may be in normally openposition when the magnets 196 and 208 are not in proximity thereto,i.e., when the tabs 192 and 204 are not positioned in the first andsecond recessed portions 220, 224. When the magnets 196 and 208 withinthe tabs 192, 204, respectively, are moved in operative proximity to thereed switch, the reed switch will close, i.e., the reed switch willclose when a magnetic field is present. Once the magnets 196 and 208 aremoved away from the switch, the reed switch will go back to its originalopen position.

When the reed switch is in the open position, the motor is configured tobe disabled, i.e., not operate. When the motor is disabled, the bladebase 28 and more particularly, the blade 124 is not capable ofoperation. Therefore, in order to operate the blending system 20, theblending container 32 and blade base 28 must be operatively coupled withthe blender base 24. Specifically, the tabs 192 and 204 must beoperatively positioned within the first and second recessed portions220, 224, respectively in order for the blending system 20 to operate.This generally prevents the user from being able to access or otherwisecontact the blade 124.

The aforementioned interlock feature 34 is further configured togenerally prevent circumvention by a user. For example, the reed switchmay be calibrated to disengage or disable the motor anytime the magnet196 or second magnet 208 or both are a predetermined distance away fromthe reed switch. The predetermined distance may be calibrated so thatthe user may not create enough space between the blending container 32,blade base 28, or blender base 24 to access the blade 124.

While the blending system 20 is operating, i.e., the motor is operating,the blending system 20 tends to attempt to rotate the blending container32 relative to the blender base 24. The tabs 192 and 204 being engagedwith the first and second recessed portions 220, 224, respectively mayprevent the blending container 32 from rotating—it may maintain theblending container 32 in its operative position with respect to theblender base 24. The tabs 192 and 204 may be generally rectangular inshape. Further, the corresponding first and second recessed portions220, 224 may be of a corresponding rectangular shape. The rectangularshape may provide the anti-rotation feature generally keeping theinterlock feature 34 operatively aligned.

The blender base 24 may include a visual indicator, such as an LED orthe like, to provide feedback to a user on the status of the interlockfeature 34. For example, the visual indicator may provide a slow flashif the machine is plugged in but the container is not properly in placeon the blender base 24. The visual indicator may provide a solid (noflash) light if the machine is plugged in, the container is in place,and the machine is ready to blend. A fast flash may be provided by thevisual indicator if an error occurred, such as: the blender base 24 isplugged in while a variable speed control is not in the stop position; acontainer was placed on the machine while the variable speed control isnot in the stop position; and/or a container was removed from themachine while operating.

The blade base 28 may further include a gasket 232 configured to providea seal between the blade base 28 and blending container 32 when coupledtogether. The gasket 232 may have a generally X-shaped cross section,such as shown in FIG. 11. The gasket 232 may generally span theperiphery of the blade base 28 such that when the blade base 28 andblending container 32 are coupled—such as being threaded together—thegasket 232 is positioned along the entirety of a location of engagementbetween the blade base 28 and blending container. While the gasket 232is shown as having a generally X-shaped cross-section, it will beappreciated that the gasket 232 may have any appropriate cross-sectionalshape that performs the same function described below. By way of anon-limiting example, the gasket 232 may have a diameter of a narrowportion d_(N) that is shorter than a diameter of a distended portiond_(D), such as shown in FIG. 12. The gasket 232 may be formed of anyappropriate material, including, but not limited to, polymeric materialssuch as elastomers or rubbers including thermoplastic or thermosetelastomers, rubber-based materials, and other polymers and co-polymershaving properties consistent with the features described above.

The gasket 232 may be configured to seal at low pressures and allow gasto exit at pressures that exceed a predetermined pressure within theblending container 32 during operation of the blending system 20. Forexample, the gasket 232 may function as a seal when the internalpressure zone within the blending container 32 exists from zero pressureto the predetermined level of pressure. After the internal pressure zonewithin the blending container 32 exceeds the predetermined levelpressure—this may be considered a high pressure condition—theconfiguration of the gasket 232 may displace the gas within the blendingcontainer 32 to safely relieve pressure from the internal pressure zone,as shown in FIG. 12. The gasket 232, however, also maintains itsoperative position between the blending container 32 and the blade base28 so that material within the blending container 32 does not leak asshown in FIG. 19.

In operation, if the user requires the blending system 20 to perform arecipe requiring a longer operation time, the friction of the spinningblade 124 may generate heat within the blending container 32. As theheat in the blending container 32 increases, so does the pressure. Asthe operation continues, the pressure may continue to build up to apredetermined level. If the force of the internal pressure zoneincreases above that predetermined level, the gasket 232 is configuredto displace that internal pressure to allow interior pressure to escapeinto the atmosphere. The shape of the gasket 232 allows the internal gasof the blending container 32 to escape while the solids and liquidsremain within the blending container 32. Thus, the pressure within theblending container 32 is generally prevented from exceeding apredetermined level.

The blending system 20 may, however, include a spill moat 236 if anyliquid escapes from the blending container 32 either during operation,during insertion of the material to be blending or while expelling thematerial from the blending container 32. The spill moat 236 may be ofany appropriate configuration and may be positioned in the pedestal 76.By way of a non-limiting example, the spill moat 236 may be positionedon the periphery of the pedestal 76. The spill moat 236 may beconfigured to capture any escaping liquid and allow it to flow along apredetermined path. At a conclusion of the predetermined path of thespill moat 236, the blender base 24 may include at least one aperture238. The aperture 238 may be configured to allow the liquid to exit fromthe blending system 20. The combination of the spill moat 236 andaperture 238 may generally prevent liquid from inadvertently enteringthe blender base 24 and more specifically from entering the workingcomponents of the blending system 20, such as the motor.

Although the embodiments of the present teachings have been illustratedin the accompanying drawings and described in the foregoing detaileddescription, it is to be understood that the present teachings are notto be limited to just the embodiments disclosed, but that the teachingsdescribed herein are capable of numerous rearrangements, modificationsand substitutions.

What is claimed is:
 1. A blending system comprising: a blender baseincluding a motor and a first shell that encases the motor; a container,the container removably coupled to the blender base; and a second shellselectively attached to the first shell.
 2. The blending system of claim1, further wherein the first shell includes a liquid diversion portionadapted to generally prevent liquid from entering the motor.
 3. Theblending system of claim 1, further wherein the second shell isselectively detachable with the blender base and a third shell isselectively attachable with the blender base.
 4. The blending system ofclaim 1, further wherein the first shell supports a blade base.
 5. Theblending system of claim 1, wherein the container further comprises amagnet positioned between inner and outer layers of the container andthe base includes a sensor positioned therein, wherein the magnet inoperative proximity to the sensor permits operation of the motor.
 6. Theblending system of claim 5, wherein the sensor includes a Reed Switch.7. The blending system of claim 1, wherein the second shell furthercomprises a snap-fit attachment to the first shell.
 8. The blendingsystem of claim 1, wherein the container further comprises an innerlayer and an outer layer.
 9. The blending system of claim 8, wherein thecontainer further comprises a space between the inner and outer layers.10. The blending system of claim 1, wherein the base includes a fan todirect air into the base to provide cooling air to the motor.
 11. Ablending system comprising: a base including a motor, an inner shellencasing the motor, and a top shell attached to the inner shell; a bladebase removably attached to the base, the blade base comprising: a bladepositioned in proximity to an interior surface and operatively coupledwith the motor; a container having an inner and outer layer, thecontainer selectively attached with the blade base.
 12. The blendingsystem of claim 11, wherein the blade base includes an engagement memberhaving threads and the container includes mating threads.
 13. Theblending system of claim 11, wherein the blade base includes arectangular-shaped interior surface.
 14. A blending system comprising: abase encasing a motor and a fan; a container configured to accept andhold material; a wall positioned within the base to direct airflow fromthe fan along volute-shaped path.